0) 



o 



c 

 o 



J3 



u 

 O 



M 



o 



0> 



> 



o 



> 



Q 



600 



700 



650 



Wavelength, m/i 



Fig. 2. The derivative absorption spectrum of living Chlamydomonas moewusii, 

 Starr No. 96, wliich is typical of green algae. The peak and dip at 640-660 m^ 

 is due to chloropliyll b. The shoulder at 675-680 ni//, indicates the presence of two 

 components of chlorophyll a. 



^ + 



T 1 1 1 1 1 1 1 — 



Ochromonas danica 



J I 



600 



650 



700 



Wavelength^mji, 



Fig. 3. The derivative absorption of Ocluoiuonas danica. showing tliree forms ol 

 chlorophyll a. AVarming destroys the longer wavelength components. From (3). 



451 



